Lining of iron and steel pipes, tubes, and other hollow bodies



April 22, 1930. N, DEWEY I 1,755,634

LINING OF IRON AND STEEL PIPES. TUBES, AND OTHER HOLLOW BODIES Filed June- 1927 we 5514/5; W

Patented Apr. 22, 1930 UNITED STATES PATENT-OFFICE NORMAN s'rnnrronn DEWEY, or- AIRDRIE, scorraun assrenon 'ro srnwan'rs & LLOYDS LIMITED, or GLASGOW. SCOTLAND I LINING OF IRON AND STEEL PIPES, TUBES, AND OTHER HOLLOW BODIES Application filed June 6, 1927, Serial No. 196,982, and in Great Britain January I, 1927.

This invention relates to the lining of iron and steel pipes or tubes with a bituminous chine.

improvements in the application of bituminous linings by centrifugal force to iron and 7 steel pipes or tubes whereby large numbers of such bodies (hereinafter referred to as pipes) can be treated in rapid succession,

the treatment being carried on continuously. wheels 3.; Each of the second row of stand- According to this invention the pipes are lined with a bituminous substance or com-f position by heating thepipes, charging them,

while hot, with the substance in a hot liquid. condition, translating the charged pipes bod-" ily and by mechanical action, and, during such translation, spinning them about their own axes to distribute the bituminous sub-k stance uniformly over their interior surfaces}; In this way large numbers of pipes can be" ling member or set of members to distribute over their interior surfaces previously introduced charges of liquid bituminous substance or composition.

The apparatus for carrying out the lining process may comprise travelling members in the form of power driven endless bands 10-' I 'cated parallel to each other with their upper are spun individually on a lathe or like ma- The object of this invention is to provide stretches in a common,.inclined plane, there being a conveyor band or bands for translating the pipes bodily in a transverse position and a rapidly moving spinning band or bands with which the pipes, after having been charged with liquid lining substance orcomposition, contact, the conveyor band or bands eing provided with means for preventing the pipes rolling therealong while being spun.

During or before the translation the pipes may be heated.

- In order that the invention may be clearly understood, one embodiment thereof will be described by way of example and with reference to the annexed drawings whereon,

Fig. 1 is a side elevation of a machine for lining pipesin accordance with the invention.

Fig. 2'is a corresponding plan view.

Referring to the drawings, the numerals 1 denote standards or supports arranged in two parallel rows on strong foundations. A driving shaft 2 is journalled in one row of standards and carries four spaced sprocket ards 1 supports a sprocketwheel 6 corresponding to a sprocket wheel 3. Over each of the sprocket wheels 3 and its corres 0nd- .ing sprocket wheel 6,8. conveyor ban 7 is I passed, there, being thus four parallel bands wilth'their upper stretches in a common plane.

so Af channel bar 8 is supported under the upper stretch of each band between the corresponding standard 1 at the left hand end of theban'd and'a-itransverse supporting bar 4 at the other end. The conveyor bands run upon, and are supported by, the said channel bars 8 which thus form skids. Standards 9, between which a cross beam 9 is placed, give support to the skids 8 between their ends.

The driving shaft 2 is geared at one end "through a gear box 10 and a worm shaft 11 to an electric motor 12, the gear ratio being large so that, when the motor is in opera.- tion, the driving shaft 2 and the bands 7 are rotated slowly.

Two other rows of standards 13 are placed between the rows of standards 1 in the positions shown. The standards 13at the right hand endof the machine carry a shaft 14 provided with four spaced sprocket wheels 15 parallel to the conveyor bands 7 and having a trolley 33 movable along the jib so that a their upper stretches co-planar with the upper stretches of the said bands 7. The chains 17 have a band of friction material or belting 17 secured round their outer faces.

Channel shaped skids 18 are placed between the standards 13 and'under the upper stretch ofeach of the chain bands 17 (hereinafter referred to as spinning bands) to support the same, the skidsbeing supported between their ends by a transverse beam 19 carried on pedestals 19.-

One end of the shaft 14 is geared to an electric motor 20 so that the spinning bands can be operated together.

The conveyor bands 7 are provided with equi-spaced upstanding stoppers 21, the stoppers being spaced apart a distance not less than the diameter of the pipes to be lined. A

series of transverse rows of stoppers is thus formed (see Fig. 2).

At the left hand or feed end of the apparatus is a feed rack composed of a number of parallel bars 22 level .with' or slightly inclined downwards towards the ends of the conveyor bands 7 on which they abut. At the right hand or discharge end of the apparatus is afinished-pipe rack composed of bars 23 andconnected to the apparatus by a-seri'es ofdownwardly inclined channel bars 24.

Between the feed end of the conveyor bands 7 and the spinning bands 17 a series of longitudinal ramps 25, each consisting of an incline, a substantially horizontal part and a decline, are located, one alongside each of the conveyor bands. A transverse spindle 26 is passed through bearings on the ramps and carries four arms 27. Thespindle ma be operated manually by a crank handle (not shown) or mechanically. 31, 31 are two swinging jibs each carrying an oil gas burner or burners 32 of known type for heating pipes. Each burner is carried by wide range of adjustment of the burners is possible. 34 and 35 represent hose for conveying the oil and air respectively to the burners. The burners 32 are adapted to project long flames into the interior of the pipes on the feed rack or, if desired, on the con veyor bands 7 Water spraying apparatus 28 is located above the spinning bands 17 and conveys water under pressure to transverse spray piggs30.

he operation of lining pipes with a molten bituminous substance or composition is as follows The electric motors 12 and 20 are started and these drive the conveyor bands 7 and the spinning bands 17 respectively, in the same er linear speed than the former which move very slowly.

The pipes to be lined, marked 5 throughout, are lifted on to the feed rack 22 on which they lie transversely. jEach end of each pipe is plugged by a ring and a number of removable rings or collars 29 are clamped-around it to act as guides while the pipe is on the machine.

The pipes are rolled in succession along the feed rack until they are caught one by one by the stoppers of the conveyor bands. Hereafter, for the sake of clearness, the treatment of one pipe will be described, but it is to be understood, that, in practice, the pipes follow one another along the machine in'quick succession.

The conveyor bands carry the pipe along and it is heated between the feed end of the said bands 'and the ramps 25, by for instance, the application of an oil or gas flame or flames while still moving.

Continuing its course, the pipe is carried and liquid state from a reservoir or tank by means of one or more counter-weighted ladles, each ladle being dipped in the tank, raised and tipped into the pipe, so delivering a measured quantity of the substance or composition.

After charging, the pipe passes down the declines into engagement with the stoppers of the conveyor bands by which it is carried forward on to the rapidly moving spinning bands. The friction between these bands and the pipe is sufficient to cause the latter to spin rapidly aboutits axis, the pipe being prevented from rolling along the conveyor bands by the fact that it is confined between stoppers. The spinning of the pipe causes the lining substance or composition to be distributed uniformly over the walls of the pipe in continued until the lining is'hard enough to support itself. 7

Coming to the end of the conveyor bands,

the pipe rolls off on to the bars 24to the finished pipe rack whence it is removed.

By adopting this method and apparatus large numbers of pipes can be quickly lined,

example, clamped thereto.

- use the composition described in specification No. 1,605,574 consisting of asphalt and a loading material such as slaked lime or kieselguhr and the pipes are heated before chargmg to a temperature of about 300 F. so as to prevent chilling of the molten composition when introduced, which militates against good adhesion, and also to maintain the composltion in a liquid state long enough to permit of its being properly distributed.

It will be appreciated that numerous variations may be made in the apparatus for lining the pipes. For example, when treating pipes of differing diameters means is provided for shifting the positions of the stoppers on the conveyer bands, the stoppers being, for Alternatively, where there are more than two conveyor bands this may be effected bygiving, say, 'each alternate band a lead over its neighbour so that the stoppers are not in transverse rows but are staggered with the result that the effective space between adjacent rows is altered, For this purpose the conveyor bands may be shifted on'their sprocket wheels or the sprocket wheels may be mounted on their driving shaft so that they can be turned thereon and then made fast.

Instead of using a number of ramps for charging, only one at one end of the pipes may be used, the stoppers being arranged to carry the pipe up this ramp so that it is tilted to facilitate charging. Instead of using a' ramp or ramps, the pipes may be raised at one end by an hydraulic ram or rams.

The skidssupporting the bands may be replaced by moving or stationary chains or the spinning bands may simply comprise bands of belting fabric running on stationary skids 5 or supports and kept lubricated.

If so desired, the pipes may be heated in a furlrziace and, while hot, be passed to the feed rac After the application of the cooling water from the sprays, the pipes may be subjected to the action of rotary or other brushes,'in order to clean and dry their exterior surfaces.

Preferably the conveyor bands and spinning bands are arranged at a slight incline, thefzl feed end being higher than the discharge en I claim 1. Lining iron and steel pipes with a bituminous substance by charging the pipes with the substance in liquid condition, translating the charged pipes bodily and by mechanical action, and, during such translation and following their charging, spinning them about their own axes at a speed materially in excess of their speed of translation There 1s the a to distribute the bituminous substance by centrifugal force uniformly over their interior surfaces.

2. Apparatus for lining iron and steel pipes with a bituminous substance comprising, in

combination, conveying means on to which the .pipes are fed, and travelling spinning means located intermediate the conveying means and moving at a different-speed from said conveying means, said conveying means translating the pipes bodily, and the spinning means, while the pipes are being so translated, contacting with the underside of the pipes and, by frictional engagement, spinning them about their own axes to distribute previously introduced charges of liquid bituminous substance.

3. Apparatus for lining iron and steel pipes with a bituminous substance comprising a plurality ofparallel endlessconveyor members driven in unison on to which the pipes are fed and which translate said pipes bodily, a plurality of parallel endless travelling members driven in union adjacent to said conveyor members, into contact with which travelling members the pipes are. carried after having been charged with liquid bituminous substance and by frictional engagement with which the pipes are spun While being translated in order to distribute over their interior surfaces the charges of bituminous substance,

and means for preventing rolling of the pipes along the conveyor members while being spun.

4. Apparatus for lining iron andsteel pipes with a bituminous substance comprising end less conveyor bands located side by side and driven in unison, meansfor feeding pipes in a transverse position on to said bands for translation bodily, a plurality of parallel endless travelling bands located side by side, driven in unison and into contact with which the pipes are carried andby frictional enmeans for heating the pipes, means for temporarily raising the pipes off said bands in order to be charged with the bituminous substance in a liquid condition, a plurality of parallel endless travelling bands located side by side, driven in unison and into contact with which the charged pipes are carried and by frictional engagement with whichthey are spun while being translated, in order to distribute the charges of bituminous substance therein, and means for preventing rolling of the pipes along said conveyor bands while be ing spun.

6. Apparatus pipes with a bituminous substance comprising endless conveyor members located side by side, driven in unison and on to which the pipes are fed and which translate said pipes bodily, a plurality of parallel endless travelling members adjacent to said conveyor members, located side by side, driven in unison and into contact with which traveling members the pipes are carried after charging with.

bituminous substance in liquid condition and by frictional engagement with which the pipes are spun while being translated, in

, order todistribute over their interior surly, means for driving the conveyor bands in unison, means for heating the pipes, means for temporarily raising the pipes oil said bands in order to be charged with the bituminous substance in a liquid condition, a plurality of parallel endless travelling bands located side by side into contact with which the charged pipes are carried and by frictional engagement with which they are spun while being translated in order to distribute the charges of bituminous substance therein, means for rapidly driving the travelling bands in unison, means for preventing the pipes rolling along the conveyor bands while being spun, and means for cooling the pipes.

8. Apparatus for lining iron and steel plpes with a bituminous substance comprismg endless conveyor members located side by side, on to which the pipes are fed and which translate said pipes bodily, means for drlving said members in unison, a plurality of parallel endless travelling members located side by side adjacent to said conveyor members, into contact with which travelling i members' the pipes are carried and by fric I tional engagement with which the pipes are spun while being translated, in order to distribute over their interior surfaces previously introduced charges of liquid bituminous substance, means for rapidly driving said travelling members in unison, and a series of spaced, upstangling stopperson the conveyor members beti'v n which the ipes lie to prevent their rolling along said ands, the endless members being of such length that transfor lining iron and steellation and spinning continue until the lining is set.

9. Apparatus for lining iron and steel pipes with a bituminous substance comprising endless conveyorv bands located side by side,

means for driving the conveyor bands in unison, means for feeding pipes in a transverse pgsition on to said bands for translation dily, a plurality of parallel endless travelling bands located side by side with theinupper stretches co-planar with'those of the conveyor bands and on to which the pipes are car- I pipes with a bituminous substance compris-- ing endless conveyor bands located side by side on to which the pipes are fed and by which they are translated bodily, means for driving said bands in unison, means for heating the pipes, means for temporarily raising the pipes 011' said bands in order to be charged with the bituminous substance in liquid condition, aplurality of parallel endless travelling bands located side by side into contact with which the charged pipes are carried and by frictional engagement with which they are spun While being translated, in order to distribute the charges of bituminous substance therein, means for ra idly driving said latter bands in unison, an a series of spaced, upstanding stoppers on the conveying bands between which the pipes lie to prevent their rolling therealong.

11. Apparatus for lining iron and steel pipes with a bituminous substance comprising endless conveyor members located side by side, on to which the pipes are fed and which translate said pipes bodily, means for driving said members in unison, a plurality of parallel endless travellingamembers located side by side, with their upper stretches coplanar with those of the conveyor members and adjacent to said conveyor members, on

to which traveling members the pipesare carried and by frictional engagement with which the pipes are spun while being translated, in order to distribute over their inte- I rior surfaces previously introduced charges of liquid bituminous substance, means for rapidly dri'vin said travelling members in unison, means for cooling the pipes after lining and while still being spun, and a series of spaced, upstanding stoppers on the conveyor members between which the pipes lie to prevent their rolling therealong, the endcharged with liquid bituminous substance, a"

less members being of such length that translation and spinning continue until thelining is set.

12.' Apparatus for linin iron and steel pipeswith a bituminous slfiistance comprising endless conveyor bands located side by side, on to which the pi es are fed and by which they are translate bodily, means for driving said bands in unison, means for heating the pipes, means for-temporarily raisthe pipes off said bands in order to be plurality of parallel endless travelling bands located side by side into contact with whichthe charged pipes are carried and by frictional engagement with which they are spun while being translated, in order to distribute the charges of bituminous substance therein, means for rapidly driving said latter bands in unison, a series of spaced, upstanding stoppers on the conveyor bands between which the pipes lie to prevent their rolling therealong, and means for cooling the pipes after lining and while still being spun. I

13. Apparatus for lining iron and steel pipes with a bituminous substance comprising endless conveyor members located side by side, on to which the pipes are fed and which translate said pipes bodily, means for driving said members in unison,'a plurality of parallel endless travelling members 10- cated side byside adjacent to said conveyor members, into contact with which'travelling members the pipes are carried and by frictional engagement with which the pipes are spun while being translated, in order to distribute over their interior surfaces previously introduced charges of liquid bituminous sub stance, means forfrapidly driving said travelling members in unison, means for spraying water on to the pipes after lining and while still spinning, and ,means for prevent ing rolling of the pipes along the conveyor pipes with a bituminous substance compris.

memberswhile beings un.

14. Apparatus for ining iron and steel ing endless conveyor members located'side by side on to which the pipes are fed and which translate said pipes bodily, means for driving said members in unison, a plurality of parallel endless travelling members located side by side adjacent to said conveyor members, into contact with which travelling members the pipes are carried and by frictional en.-

gagement ,with which the pipes are spun while being translated, in order to distribute over their interior surfaces previously introduced charges of liquid bituminous substance, means for rapidly driving said travelling members in unison, means for preventing rollingof the pipes along the conveyor members while bemg spun, and a straight skid lo cated under the upper stretch of. each memher over which skid the member runs and by which the member is supported.

pipes with a bituminousgsubstan'ce comprising endless conveyor bands located side by 'side, means for feeding pipes in a transverse position onto said bands for translation bodily, means for'driving said bands in unison, a

plurality of parallel endless travelling bands located side by side into contact with which the pipes are carried and by frictional engagement with which the pipes are spun while being translated, in order .to distribute over their interior surfaces previously introduced charges of liquid bituminous substance, means for rapidly driving said travelling bands in unison, a straight skid located under the upper stretch of each band over which skid the band runs and by which the band is supported, means for preventing rolling of the pipes along the conveyor bands while being spun, andmeans for discharging the lined pipes from the apparatus.

l6. Apparatus for lining iron and steel pipes with a bituminous substance comprising endless conveyor bands located side by side on to which the pipes are fed and by translated in order to'distribute said charges,

of bituminous substance therein, means for rapidly driving said travelling bands in unison, a straight skid located under the upper stretch of each band over which skid the band runs and by which the band is supported, and means for preventing rolling of the pipes 17. Apparatus for lining iron and steel pipes with a bituminous substance comprising endless conveyor members located side by side on to which the pipes are fed and which translate said pipes bodily, means for driving said members in unison,- a plurality of parallel endless travelling members located side by side adjacent to said conveyor members, into contact with which travelling members the pipes are carried and by ,fric-' tional engagement with which the pipes are spun, while being translated, in order to .distribute over their interior surfaces previously introduced charges of liquid bituminous substance, means for rapidly driving said travelling members in unison, means for cooling the pipes after lining and while still being spun, means for preventing rolling of the pipes along the conveyor members while being spun, and a straight skid located under the upper stretch of each member over which ber is supported.

along the conveyor bands while being spun.

18. Apparatus for lining iron and steel pipes with a bituminous substance comprising endless conveyor bands located side by side, on to which the pipes are fed and by which they are translated bodily, means for driving said bands in unison, means for heating the pipes thereon, means for temporarily raising the pipes off said bands for charging with liquid bituminous substance, a plurality of parallel endless travelling bands located side by side into contact with which the charged pipes are carried and by frictional engagement with which they are spun while being translated, in order to distribute the charges of bituminous substance therein, means for rapidly driving said latter bands in unison, a straight skid located under the upper stretch of each band over which skid the band runs and by which the band is supported, means for preventing rolling of the pipes along the conveyor bandswhile being spun, and means for cooling the pipes after lining and while still being spun.

19. Apparatus for lining iron and steel pipes with a bituminous substance comprising endless conveyor members located side by side on to which the pipes are fed and which translate said pipes bodily, means for driving said members in unison, a plurality of parallel endless travelling members located side by side adjacent to'said conveyor members, into contact with which travelling members the pipes are carried and by frictional engage ment with which the pipes are spun while being translated, in order to distribute over their interiorsurfaces previously introduced charges of liquid bituminous substance, means for rapidly driving said travelling members in unison, a series of spaced, upstanding stoppers on-the conveyor members between which the pipes lie to prevent their rolling therealong, and a straight skid located under the upper stretch of eachmember over which skid the member runs and by which the.

member is supported.

20. Ap aratus for lining iron and steel pipes wit a bituminous substance comprising endless conveyor bands located side by slde, means for feeding pipes in a transverse posltion on to said bands for translation bodily, means for driving saidbands inunison, a plurality of parallel endless travelling bands located side by side into contact with which the pipes are carried and by frictional engagement with which the pipes are spun while being translated, in order to distribute over their interior surfaces previously introduced charges of liquid bituminous substance, means for rapidly driving said travelling bands 1n unison, a straight skid located under the upper stretch of each band overwhich skid the band runs and by which the band is supported, a series of spaced, upstanding stoppers on the conveyor bands between which the pipes lie to prevent their rolling 'of parallel endless travelling bands located side by side into contact with which the charged pipes are carried and by frictional engagement with which they are spun while being translated, in order to distribute the charges of bituminous substance therein, means for rapidly driving the latter bands in unison, a straight skid located under the upper stretch of each band over which skid the band runs and by which the band is supported, and a series ofspaced, upstanding stoppers on the conveyor bands between which the pipes lie to prevent their rolling thcrealong.

22. A pparatus for lining iron and steel pipes with a bituminous substance comprisin g endless conveyor members located side by side on to which the pipes are fed and which translate said pipes bodily, means for driving said members in unison, a plurality of parallel endless travelling members located side by side, with their upper stretches co-planar with those of the conveyor members and adj acent to said conveyor members, on to which travelling members the pipes are carried and by frictional engagement with which the pipes are spun while being translated, in order to distribute over their interior surfaces previously introduced charges of liquid bituminous substance, means for rapidly driving said travelling members in unison, means for cooling the pipes'after lining and while still being spun, a series of spaced, up-. standing stoppers on the conveyor members between which the pipes lie to prevent their rolling therealong, and a straight skid located under the upper stretch of each member over which skid the member runs and by which the member is supported.

23. Apparatus for lining iron and steel pipes with a bituminous substance comprising endless conveyor bands located side by side on to which the pipes are fed and by which they are translated bodily, means for drivingsaid bands in unison, means for heating the pipes, means for temporarily raising the pipes off said bands in order to be charged with liquid bituminous substance, a plurality of parallel endless travelling bands located side, by side into contact with which the charged pipes are carried and by frictional engagement with which they are spun while being translated, in order to distribute said charges of bituminous substance therein,

, member over which skid the member runs means for rapidly driving the latter bands in unison, a straight skid located under the upper stretch of each band over which skid the band runs and by which the band is supported, a series of spaced, upstanding stoppers on the conveyor bands between which the pipes lie to prevent their rolling therealong, and means for cooling the pipes after lining and while still being spun. I v v 24. Apparatus for lining iron and steel pipes with a bituminous substance comprising a plurality of parallel endless conveyor members located side by side on to which the pipes are fed and which translate said pipes bodily, means for driving said members in unison, a plurality of parallel endless travelling members adjacent to said conveyor members, into contact with which travelling members the pipes are carried and by frictional engagement with which the pipes are spun while being translated in order to distribute over their interior surfacespreviously introduced charges of liquid bituminous substance, means for rapidly driving said travellmg members in unison, means for spraymg Water on to the pipes after lining .and while still spinning, means for preventing rolling of the pipes along the conveyor members while being spun, and a straight skid located under the upper stretch of each and by which the member is supported, the endless members being of such a length that translation and spinning continue until the lining is set.

In testimony whereof I afiix my signature. NORMAN STRAFFORD DEWEY. 

